50
Vokera
General PCB / Power Supply Fault
Code 50, furnace unresponsive, display may be blank or frozen
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed control board, Blown internal fuse, Power surge, Loose mains connector
How to Fix / Troubleshooting
Safety: Switch off power at the isolator and verify absence of voltage before removing the cover.
- Check mains supply: Confirm that the dedicated circuit breaker or fuse for the furnace has not tripped or blown.
- Inspect internal fuses: On the PCB, check any replaceable fuses (qualified persons only). Replace only with identical ratings.
- Check connectors: Ensure the mains input connector and earth are secure on the PCB.
- Board replacement: If the PCB shows signs of burning or the code persists after basic checks, the board must be replaced and configured by a qualified technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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